Download presentation
Presentation is loading. Please wait.
1
Circuit Switching and Telephone Network
Chapter 8 Circuit Switching and Telephone Network
2
8.1 Circuit Switching Space-Division Switch Time-Division Switch TDM Bus Combinations
3
Figure 8.1 Circuit-switched network
4
Figure 8.2 A circuit switch
5
Figure A folded switch
6
Figure 8.4 Crossbar switch
7
Figure 8.5 Multistage switch
8
Figure Switching path
9
Figure 8.7 Time-division multiplexing, without and with a time-slot interchange
10
Figure 8.8 Time-slot interchange
11
Figure TDM bus
12
Figure TST switch
13
8.2 Telephone Network Major Components LATAs Making a Connection Analog Services Digital Services A Brief History
14
Figure 8.11 A telephone system
15
Note: Intra-LATA services are provided by local exchange carriers. Since 1996, there are two types of LECs: incumbent local exchange carriers and competitive local exchange carriers.
16
Figure 8.12 Switching offices in a LATA
17
Figure POPs
18
Figure 8.14 Rotary and touch-tone dialing
19
Note: Voice communication used analog signals in the past, but is now moving to digital signals. On the other hand, dialing started with digital signals (rotary) and is now moving to analog signals (touch-tone).
Similar presentations
